oauth_facebook_login: minor BT definition fixes

manual edit and unused variables in the test

bt5/erp5_oauth_facebook_login/TestTemplateItem/portal_components/test.erp5.testFacebookLogin.py

@@ -74,7 +74,6 @@ class TestFacebookLogin(ERP5TypeTestCase):
     FacebookLoginUtility.getUserEntry = getUserEntry
 
     self.dummy_connector_id = "test_facebook_connector"
-    person_module = self.portal.person_module
     portal_catalog = self.portal.portal_catalog
     for obj in portal_catalog(portal_type=["Facebook Login", "Person"],
                               reference=getUserId(None),

bt5/erp5_oauth_facebook_login/TestTemplateItem/portal_components/test.erp5.testFacebookLogin.xml

@@ -45,9 +45,7 @@
         <item>
             <key> <string>text_content_warning_message</string> </key>
             <value>
-              <tuple>
-                <string>W: 77,  4: Unused variable \'person_module\' (unused-variable)</string>
-              </tuple>
+              <tuple/>
             </value>
         </item>
         <item>